Mammal-Like Reptiles

Science / Biology / Mammal-Like Reptiles: Group of Permian-Triassic reptiles having some possible mammalian features, notably a more prominent dentary (tooth-bearing) bone and reduction of the incus and malleus (which are part of the reptilian jaw along with the dentary). The mammal-like reptiles are thought to have been the reptile group from which the mammals later evolved.

Mammal-Like Reptiles

Science / Biology / Mammal-Like Reptiles: Group of Permian-Triassic reptiles having some possible mammalian features, notably a more prominent dentary (tooth-bearing) bone and reduction of the incus and malleus (which are part of the reptilia MORE

Reptiles

Science / Biology / Reptiles: Taxonomic class of vertebrates characterized by scales and amniotic eggs; the first truly terrestrial vertebrate group. MORE

Triassic Period

Science / Biology / Triassic Period: The first period of the Mesozoic Era between 225 and 185 million years ago. Pangaea began to breakup during this time. The ancestors of dinosaurs were present, as were early mammals and mammal-like re MORE

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